1 7/5 >7/3， 16/7 & lt； 16/ 1 1 9/4 & lt； 5/4 17/ 15 & gt； 22/ 15

2 9/8 >6/5 3/ 1 & lt； 7/3 5/2 > 10/3 8/5 & lt； 10/7

More than 4/1:8/33/17/21/3 and less than 4/1:5/116/39/2.

4 5/3 >2/ 1, so uncle Li did well.

5 4/ 1 = 8/2 & lt； 8/3, so I slept more.

6 3/ 1 = 75/25 5/ 1 = 75/ 15 25/3 = 75/9 3/ 1 & gt； 5/ 1 >25/3 So Asia is the largest and South America is the smallest.

7 5/3 >4/ 1, so there are many 0 cards.

8 because12/7 >; 4/ 1 >6/ 1 Therefore, popular science should be purchased.

9 20/ 13 & lt； 10/7<5/4 18/7 & lt； 6/5 & lt； 12/ 1 16/7 & lt； 4/5 & lt； 3/4

10 According to the basic property of the fraction: the denominator and numerator of the fraction are multiplied at the same time and then divided by the same number (except 0), and the value of the fraction remains unchanged. Because 6/1=120/205/1=120/24, there are 120/2 1,120/22.